I know people are going to say, or have said, just stop. They don't understand what it's like. The best thing to do is find something that distracts you. I doodle/make friendship bracelets. Im fidgety, so i need to do something with my hands a lot. I play music, so when I'm at home i play my guitar when i feel like I'm going to do something. I know people are also going to say talk to someone, but people who haven't done it will freak out and be like OH MY GOD. I have talked to my friends and it turns out they have done it too. They best people to talk to are people who have been in your shoes and who have quit.